JPS5815533B2 - Handatsuke Seino Sugreta You Yua Enmetsuki Kohan Oyobi Seizouhou - Google Patents
Handatsuke Seino Sugreta You Yua Enmetsuki Kohan Oyobi SeizouhouInfo
- Publication number
- JPS5815533B2 JPS5815533B2 JP50020849A JP2084975A JPS5815533B2 JP S5815533 B2 JPS5815533 B2 JP S5815533B2 JP 50020849 A JP50020849 A JP 50020849A JP 2084975 A JP2084975 A JP 2084975A JP S5815533 B2 JPS5815533 B2 JP S5815533B2
- Authority
- JP
- Japan
- Prior art keywords
- galvanized steel
- hot
- soldering
- dip galvanized
- sugreta
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- ing And Chemical Polishing (AREA)
- Coating With Molten Metal (AREA)
Description
【発明の詳細な説明】
本発明はアルミニウムを含んだ溶融匝鉛メッキ鋼板のハ
ンダ付は性をアルカリ性エツチングによって改良した亜
鉛メッキ鋼板の製造法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a galvanized steel sheet in which the solderability of a hot-dip galvanized steel sheet containing aluminum is improved by alkaline etching.
従来、溶融亜鉛メッキ鋼板のハンダ付は性を改善する方
法としてはメッキ浴にハンダ合金の構成元素である錫を
１０％未満の範囲で添加することによってメッキ層の溶
融温度を低下させる方法が公知であるが、この方法の場
合には第１図に示されているようにアルミニウムを含有
していない亜鉛浴に適用した場合にだけはハンダ付は性
の向上に有効ではあるが、現在連続メツキラインにおい
て広く使用されている亜鉛−アルミニウム浴の場合には
錫の添加効果はほとんど認められていない。Conventionally, a method known to improve the soldering properties of hot-dip galvanized steel sheets is to lower the melting temperature of the plating layer by adding less than 10% tin, a constituent element of the solder alloy, to the plating bath. However, in the case of this method, as shown in Figure 1, soldering is effective in improving soldering properties only when applied to a zinc bath that does not contain aluminum, but currently there is no continuous plating line. In the case of zinc-aluminum baths widely used in the industry, almost no effect of tin addition has been observed.
第１図は溶融能鉛メツキ鋼板の亜鉛被覆中のＡ１、Ｓｎ
含有量と・・ンダ拡がり特性との関係を示し、図中、曲
線■はＡｌ ： ０％、Ｓｎ ： ５％、曲線■はＡ１
：０．２％、Ｓｎ ： １０％、曲線ＩＩＩはＡｌ：０
．２％、Ｓｎ ： ５％、曲線■はＡｌ：０．２％、Ｓ
ｎ：１％、曲線■はＡｌ：０．２％、Ｓｎ 二Ｏ％の場
合を示す。Figure 1 shows A1 and Sn in the zinc coating of meltable lead-plated steel sheets.
It shows the relationship between the content and the .
: 0.2%, Sn: 10%, curve III is Al: 0
．． 2%, Sn: 5%, curve ■ is Al: 0.2%, S
n: 1%, curve (■) shows the case of Al: 0.2%, Sn2O%.
逆に次表に示したように溶融亜鉛メッキ鋼板の亜鉛被覆
中のＡＩ、Ｓｎ 含有量と密着曲げ加−Ｌ性との関係か
ら判るように錫を添加することによって得られたメッキ
鋼板の曲げ加工性が低下するという欠点を有している。On the other hand, as shown in the following table, the relationship between the AI and Sn contents in the zinc coating of hot-dip galvanized steel sheets and the adhesion bending strength shows that the bending of galvanized steel sheets obtained by adding tin is It has the disadvantage of reduced workability.
従って従来法の錫を含んだ亜鉛−アルミニウム浴を用い
てメッキされた溶融亜鉛メッキ鋼板は錫を含有していな
い亜鉛メッキ鋼板と比較すると、軽度の加工に供し、得
るだけであり、更にハンダ付は件の改善程度が小さいか
ら下記するような問題点を有して℃・る。Therefore, compared to galvanized steel sheets that do not contain tin, hot-dip galvanized steel sheets plated using conventional tin-containing zinc-aluminum baths can be subjected to only mild processing and can be soldered. Since the degree of improvement in this case is small, there are problems as described below.
（１）ハンダ付は部分の接合強度を大きくするためには
多量のハンダおよびフラックスを必要とするので、当然
接合部のフラックスの除去が困難となる場合を生じる。(1) Soldering requires a large amount of solder and flux in order to increase the joint strength of the parts, so naturally it may be difficult to remove the flux from the joints.
（２）ハンダの拡がり速度が小さいので、自動ハンダ付
は方式を採用した場合に、そのライン速度を遅くする必
要が生じ、結局ハンダ接合時の生産性が低下する。(2) Since the spreading speed of the solder is slow, when an automatic soldering method is adopted, it becomes necessary to slow down the line speed, which ultimately reduces the productivity during soldering.
以上のような加工性、ハンダ付は性などの材質特性上の
諸問題点に加えて実際に工業的規模の溶融メツキライン
で浴に錫を添加し、且つ錫の含有量を一定水準に保持す
ることは作業性の低下、浴成分管理の困難性および製造
コストの上昇を招き極めて実用性に乏しい方法である。In addition to the problems mentioned above regarding material properties such as workability and soldering properties, tin is actually added to the bath in an industrial-scale melt plating line and the tin content is maintained at a constant level. This results in decreased workability, difficulty in controlling bath components, and increased production costs, making this method extremely impractical.
之に対し本発明は従来法のようにメッキ層の化学組成を
変動させることなく、優れたハンダ付は性を有する溶融
亜鉛メッキ鋼板を提供すると共にメッキ浴成分を変更す
ることなく簡単な後処理を行なうことだけで溶融亜鉛メ
ッキ鋼板のハンダ付は性を向上させる方法をも提供する
ものである。In contrast, the present invention provides a hot-dip galvanized steel sheet with excellent solderability without changing the chemical composition of the plating layer unlike the conventional method, and also allows easy post-treatment without changing the plating bath components. Soldering of hot-dip galvanized steel sheets also provides a way to improve soldering properties by simply performing the following steps.
本発明の基本原理は溶融亜鉛メッキ鋼板のハンダ付は性
に関して次の事実を発見したことによるものである。The basic principle of the present invention is based on the following fact discovered regarding the soldering properties of hot-dip galvanized steel sheets.
すなわち、連続式溶融亜鉛メツキラインで一般に使用さ
れている亜鉛−（０，１〜０．３：重量％アルミニウム
浴で鋼板をメッキすると、その最表面層には酸化亜鉛以
外に酸化アルミニウムが生成される。That is, when a steel plate is plated in a zinc-(0.1 to 0.3:wt% aluminum bath) commonly used in continuous hot-dip galvanizing lines, aluminum oxide is produced in addition to zinc oxide on the outermost layer. .
その他、原料素材、装置などから不可避的に亜鉛浴中に
混入し来たるアルミニウム以外の易酸化性元素、例えば
チタン、クロム、シリコン、鉄すどが混入されて来ると
、それぞれの元素の酸化物が単独またはスピネル型酸化
物として複合した形で生成される。In addition, if easily oxidizable elements other than aluminum, such as titanium, chromium, silicon, and iron suds, are unavoidably mixed into the zinc bath from raw materials or equipment, oxides of each element may be formed. is produced singly or in a complex form as a spinel-type oxide.
之らの安定な酸化物が・・ンダ付は時のフラックスによ
る活性化を阻害しているために、一般の溶融亜鉛メッキ
鋼板のハンダ付は性は低水準に止まっている。These stable oxides inhibit activation by flux during soldering, so the soldering properties of general hot-dip galvanized steel sheets remain at a low level.
上記知見に基ついて最表面層の酸化物を通常の溶融亜鉛
メッキ鋼板に比べて少な（することによりハンダ付は件
の優れた溶融亜鉛メッキ鋼板を発明するに到ったもので
ある。Based on the above findings, we have invented a hot-dip galvanized steel sheet that has fewer oxides in the outermost layer than a normal hot-dip galvanized steel sheet, thereby making it easier to solder.
更に本発明は上記酸化物の除去方法としてエツチング法
を用いることも含んでいる。Furthermore, the present invention includes the use of an etching method as a method for removing the oxide.
すなわち、公知方法で製造された溶融亜鉛メッキ鋼板に
対してアルカリ性エツチング液を作用させて最表面層の
酸化物層を除去することにより該メッキ鋼板のハンダ付
は性を向上させることをその内容としている。That is, the purpose is to improve the solderability of a hot-dip galvanized steel sheet manufactured by a known method by applying an alkaline etching solution to remove the outermost oxide layer. There is.
しかも本発明の溶融亜鉛メッキ鋼板は通常の状態で保管
する場合には最表面層の酸化物が除去された状態を保持
することができるので工業的利用価値は大きい。Furthermore, when the hot-dip galvanized steel sheet of the present invention is stored under normal conditions, the oxides on the outermost surface layer can be maintained in a state in which oxides have been removed, so that it has great industrial utility value.
本発明法はハンダ付は性を向上させる方法として極めて
簡単であるので作業性を阻害したり、製造コストを大幅
に上昇させない利点があり、またバング付は性の良好な
製品として現在ターンシートが使用されているが、鉛公
害の点から問題がある。The method of the present invention has the advantage that soldering is an extremely simple method for improving the properties, so it does not impede workability or significantly increase manufacturing costs.Currently, turn sheets are solder as a product with good properties. However, there are problems with lead pollution.
本発明方法により処理した材料は之に代替させることも
できる。Materials treated according to the method of the invention can also be substituted for.
本発明は耐食性、加工性が共に優れているハンダ付は件
の要求される弱電機器や自動車関連部品などに対し有効
である。The present invention is effective for light electrical equipment and automobile-related parts that require soldering that has excellent corrosion resistance and workability.
以下、実施例を挙げて更に具体的に説明する。Hereinafter, a more specific explanation will be given with reference to Examples.
本実施例に用いた試験材はアルミニウムを０．２１重量
％含有する溶融亜鉛メッキ鋼板でありすべてメッキ層が
凝固する直前に微細水滴を吹き付けることによって、ス
パングルの発生を抑えた板厚０．８ｍｍ、亜鉛メッキ厚
２０〜２５μの溶融亜鉛メッキ鋼板で、クロメート処理
は附与していないものである。The test material used in this example was a hot-dip galvanized steel plate containing 0.21% by weight of aluminum, and by spraying fine water droplets just before the plating layer solidified, the plate thickness was 0.8 mm to suppress the occurrence of spangles. , a hot-dip galvanized steel sheet with a galvanizing thickness of 20 to 25 μm, without chromate treatment.
そしてハンダ付は件の評価基準としては次に記すハンダ
拡がり特性の良否を採用した。As for the evaluation criteria for soldering, we adopted the following quality of solder spreading characteristics.
すなわち２８０℃に保持したハンダ浴上に５０ｍｍ×５
０ｍｍＸ ０．８ ｍｍの寸法の試１験片を静置し、試
験片上に、Ｐｂ／Ｓｎ；５０１５０ハンダ（ロジン系フ
ラックス入り、直径：２ｍｒｒｔの糸ハンダ）を０．２
６６５１切り出してリング状に形成したものを置いて、
その加熱に伴なう拡がり挙動を測定した。In other words, 50mm x 5
A test piece measuring 0 mm x 0.8 mm was placed on the test piece, and 0.2 mm of Pb/Sn;
Cut out 6651 and place it in a ring shape,
The spreading behavior accompanying heating was measured.
すなわち第２図におけるＴｏ、ｔａｎα、ＳｅおよびＴ
ｅの大小によって試１験材のハンダ付は性を評価した。That is, To, tanα, Se and T in FIG.
The solderability of the test material was evaluated based on the size of e.
第２図における
Ｔｏ ；拡がり開始時間（ｓｅｅ ）
ｔａｎα；初期拡がり速度（ｍｎ／ ｓｅｅ ）Ｓｅ
；平衡拡がり面積（ｍＡ ）
Ｔｅ ；平衡到達時間（ｓｅｃ ）
である。To in Fig. 2: Spreading start time (see) tanα: Initial spreading speed (mn/see) Se
; Equilibrium spreading area (mA) Te ; Time to reach equilibrium (sec).
なお、本発明を適用しない比較材のハンダ拡がり特性は
次の通りである。Note that the solder spreading characteristics of comparative materials to which the present invention is not applied are as follows.
拡がり開始時間（ｓｅｅ ） ： ５
初期拡がり速度ＣｍｙＡ／ ｓｅｃ ） ； ５平衡拡
がり面積（ｍ７７）；５０
平衡到達時間（ｓｅｃ ） ： ３０
実施例 １
試験材を９０ ’Ｃの１５％ＮａＯＨ浴に９０秒間浸漬
したところ、第３図に示すようにハンダ拡がり性が改善
された。Spreading start time (see): 5 Initial spreading speed CmyA/sec); 5 Equilibrium spreading area (m77); 50 Equilibrium reaching time (sec): 30 Example 1 The test material was placed in a 15% NaOH bath at 90'C for 90 seconds. When immersed, the solder spreadability was improved as shown in FIG.
図中、曲線Ａは比較材、曲線Ｂは実施例１、曲線Ｃは実
施例２の場合を示す。In the figure, curve A shows the comparative material, curve B shows the case of Example 1, and curve C shows the case of Example 2.
（比較材）
拡がり開始時間（ｓｅｅ ）・・・・・・・・・ ５
（５）初期波がり速度（ｍａ／ ｓｅｃ ）・・・
１．４（５）平衡波がり面積（７１１７ｉｌ）・・・・
・・・・・・・・１０５ （５０）平衡到達時間（ｓ
ｅｅ ）・・・・・・・・・・・・ １８ （３０）
となり、ハンダ付は性は著しく改善された。(Comparison material) Spreading start time (see) 5
(5) Initial wave velocity (ma/sec)...
1.4 (5) Equilibrium wave area (7117il)...
・・・・・・・・・105 (50) Equilibrium arrival time (s
ee)・・・・・・・・・・・・ 18 (30)
As a result, soldering performance has been significantly improved.
すなわち、本発明を適用しない比較材に対して初期波が
り速度が約３倍、平衡波がり面積が約２倍、そして平衡
到達時間が約％になっており、先に記した従来材の有す
る諸欠陥が著しく低減された。That is, compared to the comparative material to which the present invention is not applied, the initial wave speed is approximately three times, the equilibrium wave area is approximately twice, and the time to reach equilibrium is approximately %, which is the same as that of the conventional material described above. Defects were significantly reduced.
実施例 ２
試験材を市販のアルカリ系エツチング剤（商品名：ＮＰ
クリーナー＋１０５Ｆ、日本ペイント株式会社製）の８
０°Ｃ１１５％浴に２秒間浸漬した結果、その・・ンダ
拡がり特性は第３図に示すように改善された。Example 2 The test material was treated with a commercially available alkaline etching agent (trade name: NP).
Cleaner + 105F, manufactured by Nippon Paint Co., Ltd.) 8
As a result of immersion in a 115% bath at 0° C. for 2 seconds, its .
すなわち
（比較材）
拡がり開始時間（ｓｅｅ ）・・・・・・・・・ ４
（５）初期波がり速度（ｍｊ／ ｓｅｃ ）・・・
１６ （５）平衡波がり面積（ｍＡ ）・・・・・・
・・・・・・１４５ （５０）平衡到達時間（ｓｅｅ
）・・・・・・・・・・・・ １６ （３０）とな
り、そのハンダ付は性は大きく向上した。That is, (comparative material) Spreading start time (see) 4
(5) Initial wave velocity (mj/sec)...
16 (5) Equilibrium wave area (mA)...
・・・・・・145 (50) Equilibrium arrival time (see
)......16 (30), and the soldering performance has been greatly improved.
すなわち、比較材のハンダ付は性に対して本実実施のそ
れは初期波がり速度が約３倍、平衡波がり面積が約３倍
、そして平衡到達時間が約％になっており、先に記した
従来技術による溶融亜鉛メッキ鋼板の有する諸欠陥は著
しく軽減された。In other words, compared to the soldering properties of the comparative material, the actual waving speed is about 3 times that of the actual material, the equilibrium waving area is about 3 times as much, and the time to reach equilibrium is about %, which is the same as described above. The defects of hot-dip galvanized steel sheets according to the prior art were significantly reduced.
その結果、一定の接合強度を得るために必要なハンダ量
は従来材の％となり、且つ自動ハンダ付はラインにおい
てはそのライン速度を約３倍にまで増大させることがで
き、生産性の大幅な向上が可能となった。As a result, the amount of solder required to obtain a certain joint strength is % of that of conventional materials, and automatic soldering can increase the line speed by about three times, significantly increasing productivity. Improvement was possible.
以上のように公知の方法に従って製造された溶融亜鉛メ
ッキ鋼板に対して、本発明に成るエツチング処理を附与
し、極表層に生成されている酸化物層を除去することに
よって、極めて容易にハンダ付は性を向上させることが
できた。By applying the etching treatment according to the present invention to the hot-dip galvanized steel sheet manufactured according to the known method as described above and removing the oxide layer formed on the extreme surface layer, soldering becomes extremely easy. The attachment was able to improve sex.
第１図は一般試聴材のハンダ拡がり特性面、第２図は従
来公知方法によって亜鉛被覆中に錫を添加した場合の加
熱保持時間とハンダ拡がり特性との関係を示したもので
あり、第３図は本発明溶融亜鉛メッキ鋼板のハンダ拡が
り特性を示す図である。Figure 1 shows the solder spreading characteristics of a general test material, Figure 2 shows the relationship between the heating holding time and the solder spreading characteristics when tin is added to the zinc coating by a conventionally known method. The figure shows the solder spreading characteristics of the hot-dip galvanized steel sheet of the present invention.
Claims (1)
部をアルカリ性エツチングすることによって除去し溶融
亜鉛メッキ鋼板の・・ンダ付げ性を向上させたハンダ付
は性の優れた溶融亜鉛メッキ鋼板の製造法。1 A hot-dip galvanized steel sheet with excellent solderability, which has improved solderability by removing most or all of the oxides formed on the outermost surface layer by alkaline etching. manufacturing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP50020849A JPS5815533B2 (en) | 1975-02-21 | 1975-02-21 | Handatsuke Seino Sugreta You Yua Enmetsuki Kohan Oyobi Seizouhou |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP50020849A JPS5815533B2 (en) | 1975-02-21 | 1975-02-21 | Handatsuke Seino Sugreta You Yua Enmetsuki Kohan Oyobi Seizouhou |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5195941A JPS5195941A (en) | 1976-08-23 |
| JPS5815533B2 true JPS5815533B2 (en) | 1983-03-26 |
Family
ID=12038525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP50020849A Expired JPS5815533B2 (en) | 1975-02-21 | 1975-02-21 | Handatsuke Seino Sugreta You Yua Enmetsuki Kohan Oyobi Seizouhou |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5815533B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6151434U (en) * | 1984-09-11 | 1986-04-07 | ||
| JPH0453729B2 (en) * | 1984-09-19 | 1992-08-27 | Tadano Kk | |
| JPH06278479A (en) * | 1993-03-25 | 1994-10-04 | 喜十郎 ▲真▼鍋 | Exhaust gas switching device for vehicle |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0199775A (en) * | 1987-10-09 | 1989-04-18 | Sumikin Kozai Kogyo Kk | Base treatment method in melt joining |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4945844A (en) * | 1972-09-07 | 1974-05-01 |
-
1975
- 1975-02-21 JP JP50020849A patent/JPS5815533B2/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4945844A (en) * | 1972-09-07 | 1974-05-01 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6151434U (en) * | 1984-09-11 | 1986-04-07 | ||
| JPH0453729B2 (en) * | 1984-09-19 | 1992-08-27 | Tadano Kk | |
| JPH06278479A (en) * | 1993-03-25 | 1994-10-04 | 喜十郎 ▲真▼鍋 | Exhaust gas switching device for vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5195941A (en) | 1976-08-23 |
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